There is no greater concern among pilots and airplane owners today than the cost of fuel. Prices vary widely from airport to airport, but $5 is often on the low end and $7 a gallon is not the top. And in many instances jet fuel costs more than avgas, a reversal of traditional pricing. Fuel costs for most airplane owners have doubled in the past year and nobody can predict future trends, but higher prices sure seem more likely than lower.
What Is the Most Fuel-Efficient Airplane?
Key Takeaways:
- Rising fuel costs make aircraft fuel efficiency a top concern, which is best measured by "specific range" (miles per pound of fuel consumed) for the entire trip, not just cruise.
- Piston aircraft fuel efficiency is highly pilot-dependent, with significantly slower speeds (around best rate of climb) yielding much higher specific range compared to high-speed cruise.
- Turbine aircraft efficiency is complex, influenced by factors like optimal altitude (often constrained by air traffic control), air temperature, aircraft weight, and increased aerodynamic drag as local airflow approaches critical Mach speeds.
- Ultimately, the most fuel-efficient airplane is a trade-off, balancing desired speed, comfort, and range against specific range, with newer designs continuously improving jet efficiency through aerodynamic and engine advancements.
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